5/8"-18 Flange Wheel Lug Nut – 8K / 10K / 12K / 15K Trailer Axles
5/8"-18 flange wheel lug nut designed for heavy-duty trailer axles rated 8,000 lb through 15,000 lb. Commonly used on dual hub-piloted wheel applications.
This flange-style nut distributes clamping force across a wider surface area compared to standard lug nuts, helping maintain secure wheel retention under heavy loads.
Features
- Heavy-duty 5/8"-18 thread flange nut
- Fits 8K, 10K, 12K, and 15K trailer axles
- Designed for dual hub-piloted wheels
- Integrated flange for improved load distribution
- Requires 1-1/8" socket for installation
Specifications
| Specification | Detail |
| Thread Size | 5/8"-18 |
| Length | 1" |
| Socket Size Required | 1-1/8" |
| Overall Flange Diameter | 1-9/16" |
| Wheel Type | Dual Hub-Piloted Wheels |
R&P Knowledge Hub
Flange lug nuts are commonly used on heavy-duty trailer axles where additional clamping surface is required. The integrated flange spreads the load across the wheel face, reducing stress concentration.
Always verify thread pitch (5/8"-18), socket size, and wheel type (hub-piloted vs. stud-piloted) before installation. Use proper torque specifications according to axle manufacturer guidelines.
IMPORTANT: Confirm thread size and wheel compatibility before installation. Improper lug nut selection can result in wheel loosening or damage.
